Medeco³ Key-in-Knob cylinders are designed to retrofit knob type cylindrical locksets, lever type cylindrical locksets, padlocks and bored type auxiliary deadlatches and deadlocks. 20 series, Key-in-Knob cylinders are UL437 listed for drill and pick resistance, and the those that incorporate the Medeco³ design, offer utility patented key control.
Medeco³ Key-in-Knob cylinders can be ordered with a variety of different cylinder technologies. To compare the mechanical features, see the below chart.